Electric signaling system.



J. S. HARLEY ELEOTRIG SIGNALING SYSTEM.

APPLIO ATION FILED MAY 16. 1910. 4

Patented Apr. 4, 1911;

. a. 7 Her W Va 7? .m J W 0 UNITED STATES PATENT OFFICE.

JOHN S. HARLEY, F MINNEAPOLIS, MINNESOTA, ASSIGNOB T0 WILLIAM C. KNIGHT,

TRUSTEE, OF MINNEAPOLIS, MINNESOTA..

ELECTRIC SIGNALING SYSTEM.

Specification of Letters Patent.

Patented Apr. 4,, 1911.

Signaling Systems, of which the following is a specification.

My invention relates 'to electric slgnallng systems and especially to such as are adaptedtogive fire alarm signals; and its object is to produce an improved .electrically operated signaling system adapted for use in hotels, factories, ofiicebuildings, and the like, and which, when an alarm is turned in, is capable of delivering a signalnot'only to afire department but also to the main ofiice and all of the rooms of the building in which" a the system is installed, the annunciator at the fire de a-rtment indicating the system or building mm which the alarm is sent and the annunciator in the oflicef'of the building indicating the particular room in which the electric c1rcuit"wasclosed to .give the. alarm.

My improved electric signaling system is illustrated'in the accompanying drawings,

in which the figure represents d1agrammati-- cully the principal features of the improved In sueh drawing A designates main office of a hotel or other building, and a, b, 0,

'a fire department building. From a battery 1, or other source of electricityor' electric energy, a main or lead wire.

etc., different rooms of the building; and B 2 extendsthroughout thesystem to the, different rooms a, 0, etc., of the building, and

- a return wire 3 for returning the current to the source. Shunt circuits are established rooms-by-mea-ns of branch wires 4.

The wiring and the signaling, alarm,-lamp,

from the mai n wire 2 for thesuccessive.

-- andother devices for each room of the sys- '1' term may he identical or substantially the same and" hencev specific description of the devices, circuits, etc.', for one of the'roor'ns, room a for nstance, 18 deemed sufliclent.

Aswitch 6 in room a is connected to a re turnwire 7 formakin contact with the ter.- minalof -the wired. y-closing-ethe switch the current will pass fromthe wire 7' to an.

annunciator or indicator 8', located-preferably in the 'ofli'cc A, and operate it toindi-v cate the number, of the room in which the circuit" was closed. The" current passes the return wire3 to complete the circuit. The closingof thesecond'switch 12 serves etc.

through the annunciator-and onward. on the wire 9 to'a solenoid 10, which serves to close the double-pole switch .11. and. 12, and it flows thence by Way ofa closed switch 13 to to close a circuit from the main. wire 2-on a line-wire 14; leading to the rooms a, b, 0,

nected' wire 15-le'ad's toa bell lfiand by way of a. shunt wire 17 to a lamp 1.8. located in the.

A=shunt circuit by wayof the, conofiice of the building, the circuit being com- 'pleted over the return wire through: the

of theswitch12 also wire The closin permits a portion 0 the ourre'ntto fiow on- Ward through-the line wire 14; andjthrough-a shunt-wire 19 provided for-each roomembraced in thesystem to a bell 20 located in 1- theroom and thence to the'return wire 3.- A portion of; the current ,fromthe wire 19 flow'slby way of 'shunt'-wires-.21,'=22, and 23 to'a pair oflamps 2 1 and 25", located in each room, and oneof which preferably shows a red light;

To give an alarm at; the lite department a branch wire 26 is connectedto the line wire 14 and to an amit'lfiiator 2.7?aftlje fire department B, whichf-williii'dicate builch ing from which the signal was'sent, an d"tlie current would flow from the annunciator on the wire 28: to the-ground at 29. At the same time'gal portion of the current will flow from the wire26 to the shunt-wire30- to a solenoid 3-1 and thence-to the grounded wire 28. The-solenoidwill c1080 aJsw'itch'32 and "complete a circuit-from a local battery 33 on" I the wires 34, including a signal-M1135. The

.actuation of the bel-lj35 can be stopped turning a switch 36 fromthe position shown -.in the drawing, and thereby opening the circuit- 'which'oontrols the" solenoid .31.. TO complete the circuit'the return 'wire 3 is also grounded at the building 37 grounded at 38. r

In place of or in addition to .the switch 6.

a branch wire 5a thermostat39' maybe provided .for'each room and adapted upon a rise of tempera ture to apredetermined. degree to close a pair of contacts 40 on branch wires il which oonnectthe wire 4. with the wire 7 To open the circuit and stop the signaling :the switch 13 which connects thesolenoid 1O witlitlienretur-n wire 3 is opened.

In-orde'r' to indicate that the system is in H operative condition .a suitably located'lamp 42 is provided which is on a shunt circuit 43 connected with-the battery 1. A solenoid 44 is provided in the circuit and serves nor:

leased bymthe solenoid 44 will gravitate to lp close the circuit46 and cause the ringing of the bell 48 The circuit 46 can beopened to stopthe ringing of the bell 48 by turning the switch 49; c

In operation, Whenever the circuit is or the thermostat 39 in one of'the rooms, a.

general alarm -throughout the, system is,

' given. The appropriate annunciator 8 in the ofiice willin'dicate the room-in which the closing of the circuit occurred. In sequence an alarmj-will be sent in to the-fire department by the wire 26; the bell 16 will be rung and the lamp" 18 lighted; and the bell 20 will be rung and the lamps 24 and 25 in each room lighted. And these operations 'will continue until the circuit is brokeniby'openingthe switch 13. When the circuit is closed "either by means of the'switch 6 or thermo stat39 the solenoid 10 .will continue to be energized by current from the line-wire 14 passing through a branch wire '50 to the wire 9 and thence to and through the solenoid to the return wire-3..

' Having descr bed my invention, what I claim and des'i; to secure by Letters Pat ent i s r r 11. An electric signaling 5, stem, comprising a main ci rcuit, a series o branch circuits tapping the main circuit, a' switch forcon- 40 trolling each of the-,b'ranchcircuits, an annunciator in each :of the branch circuits, a solenoid common to all-of the branch-cir- 'cuits, a double-pole switch controlled by the solenoid, and signaling circuits, including i5 -signalingfldevi'ces, connected with. the main circuit by'mea-ns'of said double-pole switch.

2. electric slgnalingv s stein, compris inga main circuit, a series '0 branch icireuits tappingth'e'rnain circuit, .ano .en circuit thermostat forcontrolling'eaeh o the branch circuits, an annunciator in eachof thebranch ci'rcuits,--'a solenoid common to all of the branch circuits, 9.- double-pole switch Icon- 'trolled b the solenoid, and signaling circuits', inc uding signaling devices, connected with the main circuit by means of said double-pole Switch.

-"3-,Ari electric signaling system, compris in a "niain circuit, f a series of branch cir' "c111ts tapping the main circuit, current-con- 'trolling means cuit a group series of annunciators corresponding with-and connected with the branch "circuits, a solenoid eoinmonto all of the branch circuits,- at double-pole swim-h closed, either by, operation of the switch 6' rovided in each branch cir .nected with the branch circuits, a solenoid common toall of the branch circuits, a V double-pole switch. controlled, by; the .solenoid, and, signaling circuits connected with the main circuit by means o f's'aiid double-' pole switch-and including sigl aling devices located correspondingly. wit said branch circuits. i

5. An electricsignaling s stem,;.com p,risinga main circuit, a series 0 branch circuits tapping the main circuit at difierent locations, current-controlling means provided in each branch circuit, a grouped series of annunciators correspondlng with and con:

necte'd with the branch circuits, a solenoid common to -al1..;of the branch circuits, a'

double-pole Switch controlled by the solenoid, and signaling circuits 'connectedwith the main circuit by means of said doublepole switch and including a branch circuit to a fire department statlon. and including signaling devices located correspondingly with said branchcircuit's. i f g 6. An electric signaling ,5 stem, comprising a; main circuit, aseriesfo branch circuits tapping the main circuit, current-controlling means provided in each branch circuit, "a-

grouped series of annunciators corresponding with and connected with'the branch circults, and a-shun t-circuit 'including'si al-'10 i mg means for indicating a deficiency o current in the main circuit.

7. Anelectr'ic signalingr jstem, compris d.

ing a main circuit, a series. 0 branch circuits tapp ng vthe main circuit, a swltc'h for con- 119 trolling each 01": the branch circuits,'anannunciator in each of the branch circuits, a solenoid common to all of thebranchciruiits,a doubleole-switch controlled by the solenoid," signa ing circuits, including sige 1 15- 1 nalrn dev ces, connected Witli'the mamcir ouit means .of said double-pole switch, anda switch 'for opening and closing the signaling circuit.

8.- An electric signaling system, oompris- 12 ing -a main circuit, 'a-series. of branch cir-' cults tappingt'he-main circuit,- current controlling means Aprovid'ed in each branch .ci'rv cuit, a groupe series of annunciatorscorresponding. with {and connected with th branch. circuits,- a shuntcircuit' asecond circuit, signaling means operable by said, vsecemd, circuit, and means controlled by said 1 shunt circuit for-'causi said secondcircuit 'to operate said signalmg means when. c1810 ing a main circuit and branch circuits tap-,

a second and independent circuit, a signs-L 1ng device operable by said second circuit, 10

deficiency of current occurs in the main circuit,

9. An electric signaling system, comprisping the same, a shunt circuit connected with and energized by the source of current of the main circuit, a solenoid in said shunt circuit,

a switch for closing said second circuitto cause the samelto operate the signal, said switch being held. open when the solenoid is energized by proper current in themain circuit, and closing upon deficiency of said current. H I

10. An electric signaling system, comprising a'main circuit, a series of branch circuits l tapping the-maincircuit, current controlling means provided in each branch circuit, signaling circults, including slgnaling means, means common to all the branch circuits for connecting said signaling circuits to the main circuit and thereby operatin all-of the signaling means, each 'unit of sai signaling means including a colored warning light, an illuminating light, and-an alarm bell;

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses this 14th day-of.

May, 1910; Y

JOHN-S. HARLEY. Witnesses: c

P. H. GUNCKEL, l A. BOWMAN."-

Copies of this patent may be obtained for -flve cents each, by addressing the Commissioner of Patents .Washingten, D. G. i u 

